Answer:
Trafficking Victims. Human trafficking, a grave human rights violation, refers to the sale of adults and children into both commercial sexual servitude and forced or bonded labor.
Explanation:
To reserve something is to set aside
Ex: "I reserved that hotel room."
I think its an Idiom. I don't see like or as. So no simile. I don't see he is something like a marshmallow. - No metaphor. I also don't see a non-human thing doing human things- the grass was dancing in the wind. My answer would be an idiom.
Hope this helps!